public bool TryRender(RenderingContext context, TextWriter writer)
{
var renderer = ResolveRenderer(context.Displayable.GetType());
if (renderer == null)
return false;
renderer.Render(context, writer);
return true;
}
public void Render(RenderingContext context, TextWriter writer)
{
var tw = WebExtensions.GetEditableWrapper(context.Content, context.IsEditable, context.PropertyName, context.Displayable, writer);
using (tw)
{
var renderer = ResolveRenderer(context.Displayable.GetType());
renderer.Render(context, writer);
}
}
public static RenderingContext Create(HtmlHelper html, string propertyName)
{
var context = new RenderingContext();
context.Content = html.CurrentItem();
var template = html.ResolveService<ITemplateAggregator>().GetTemplate(context.Content);
if (template != null)
context.Displayable = template.Definition.Displayables.FirstOrDefault(d => d.Name == propertyName);
context.Html = html;
context.PropertyName = propertyName;
return context;
}
public override Control AddTo(ContentItem item, string detailName, Control container)
{
using(var sw = new StringWriter())
{
var rc = new RenderingContext { Content = item, Displayable = this, Html = CreateHtmlHelper(item, sw), PropertyName = detailName };
Render(rc, sw);
var lc = new LiteralControl(sw.ToString());
container.Controls.Add(lc);
return lc;
}
}
internal void Render(RenderingContext context, TextWriter writer)
{
string text = context.Content[context.PropertyName] as string;
if (text == null)
return;
var tokens = context.Content.GetDetailCollection(context.PropertyName + "_Tokens", false);
if (tokens != null)
{
int lastFragmentEnd = 0;
foreach (var detail in tokens.Details)
{
if (lastFragmentEnd < detail.IntValue)
writer.Write(text.Substring(lastFragmentEnd, detail.IntValue.Value - lastFragmentEnd));
string tokenTemplate = detail.StringValue.TextUntil(2, '|', '}');
ViewEngineResult vr = null;
try
{
vr = ViewEngines.Engines.FindPartialView(context.Html.ViewContext, "TokenTemplates/" + tokenTemplate);
}
catch (System.Exception ex)
{
Trace.WriteLine(ex);
}
if (vr != null && vr.View != null)
{
var model = detail.StringValue[tokenTemplate.Length + 2] == '|'
? detail.StringValue.Substring(tokenTemplate.Length + 3, detail.StringValue.Length - tokenTemplate.Length - 5)
: null;
var vc = new ViewContext(context.Html.ViewContext, vr.View, new ViewDataDictionary(model) { { "ParentViewContext", context.Html.ViewContext } }, context.Html.ViewContext.TempData, writer);
vr.View.Render(vc, writer);
}
else
writer.Write(detail.StringValue);
lastFragmentEnd = detail.IntValue.Value + detail.StringValue.Length;
}
if (lastFragmentEnd < text.Length)
{
writer.Write(text.Substring(lastFragmentEnd, text.Length - lastFragmentEnd));
}
}
else
{
writer.Write(text);
}
}
internal void Render(RenderingContext context, TextWriter writer)
{
string text = context.Content[context.PropertyName] as string;
if (text == null)
return;
var tokens = context.Content.GetDetailCollection(context.PropertyName + CollectionSuffix, false);
if (tokens != null)
{
int lastFragmentEnd = 0;
foreach (var detail in tokens.Details)
{
var token = detail.ExtractToken();
if (lastFragmentEnd < token.Index)
writer.Write(text.Substring(lastFragmentEnd, token.Index - lastFragmentEnd));
ViewEngineResult vr = null;
if (context.Html.ViewContext.HttpContext.IsCustomErrorEnabled)
{
try
{
vr = ViewEngines.Engines.FindPartialView(context.Html.ViewContext, "TokenTemplates/" + token.Name);
}
catch (System.Exception ex)
{
logger.Error(ex);
}
}
else
{
vr = ViewEngines.Engines.FindPartialView(context.Html.ViewContext, "TokenTemplates/" + token.Name); // duplicated to preserve stack trace
}
if (vr != null && vr.View != null)
{
var viewData = new ViewDataDictionary(token.Value) { { "ParentViewContext", context.Html.ViewContext } };
viewData[RenderingExtensions.ContextKey] = context;
viewData[RenderingExtensions.TokenKey] = token;
var vc = new ViewContext(context.Html.ViewContext, vr.View, viewData, context.Html.ViewContext.TempData, writer);
vr.View.Render(vc, writer);
}
else
writer.Write(detail.StringValue);
lastFragmentEnd = token.Index + detail.StringValue.Length;
}
if (lastFragmentEnd < text.Length)
{
writer.Write(text.Substring(lastFragmentEnd, text.Length - lastFragmentEnd));
}
}
else
{
writer.Write(text);
}
}
private void RenderDisplayable(TextWriter writer)
{
var displayable = DefinitionMap.Instance.GetOrCreateDefinition(CurrentItem).Displayables.FirstOrDefault(d => d.Name == propertyName);
if (displayable == null)
{
if (isOptional || swallowExceptions)
return;
throw new N2Exception("No attribute implementing IDisplayable found on the property '{0}' of the item #{1} of type {2}", propertyName, CurrentItem.ID, CurrentItem.GetContentType());
}
if (Wrapper != null)
writer.Write(Wrapper.ToString(TagRenderMode.StartTag));
var ctx = new RenderingContext
{
Content = CurrentItem,
Displayable = displayable,
Html = Html,
PropertyName = propertyName,
IsEditable = isEditable && ControlPanelExtensions.GetControlPanelState(Html) == ControlPanelState.DragDrop
};
Html.ResolveService<DisplayableRendererSelector>()
.Render(ctx, writer);
if (Wrapper != null)
writer.Write(Wrapper.ToString(TagRenderMode.EndTag));
}
private void RenderDisplayable()
{
var displayable = DefinitionMap.Instance.GetOrCreateDefinition(CurrentItem).Displayables.FirstOrDefault(d => d.Name == propertyName);
if (displayable == null)
{
if (!swallowExceptions)
throw new N2Exception("No attribute implementing IDisplayable found on the property '{0}' of the item #{1} of type {2}", propertyName, CurrentItem.ID, CurrentItem.GetContentType());
return;
}
var writer = Html.ViewContext.Writer;
if (Wrapper != null)
writer.Write(Wrapper.ToString(TagRenderMode.StartTag));
var ctx = new RenderingContext { Content = CurrentItem, Displayable = displayable, Html = Html, PropertyName = propertyName };
Html.ResolveService<DisplayableRendererSelector>()
.Render(ctx, writer);
if (Wrapper != null)
writer.Write(Wrapper.ToString(TagRenderMode.EndTag));
}
public override RegisteringDisplayRenderer <T> Create <T>(N2.Web.Rendering.RenderingContext context, N2.Definitions.Runtime.ContentRegistration re)
{
return(new UnencodedRegisteringDisplayRenderer <T>(context, re));
}
public override void Render(RenderingContext context, IWritingDisplayable displayable, TextWriter writer)
{
displayable.Write(context.Content, context.PropertyName, writer);
}
public void Render(RenderingContext context, TextWriter writer)
{
ResolveRenderer(context.Displayable.GetType()).Render(context, writer);
}
